Link for steam-engines



(ModeL) 2 Sheets-Sheet 1.

S. T. BRYANT.

LINK FOR STEAM ENGINES.

No. 322,415. Patented July 21. 1885.

WITNESSES I JNVEJVTOR 6M yarqube flttorniey N. PETERS,Photo-Lithographer. wnhm lun D C (Model. 2 Shefis-Sheet 2.

s. T. BRYANT. LINK FOR STEAM ENGINES. No. 322,415. Patented July 21,1885.

Fly af I .Attorney N. PETERS, Pholo-Ulhugrlphur, Wuhlngmm [LC UNITESTATES PATENT OFFICE.

SAMUEL T. BRYANT, OF SHELBURN, INDIANA.

LINK FOR STEAM ENGINES.

SPECIFICATIQN forming part of Letters Patent No. 322,415, datedJ'uly 21,1885. Application filed March 31, 1885. (Model.)

To all whom it may concern.-

Be it known that I, S. T. BRYANT, a citizen of the United States,residing at Shelbu'rn, in the county of Sullivan and State of Indiana,have invented certain new and use ful Improvements in Links for Steam-Dngines, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to improvements in links for steam-engines; andit has for its obect to cut off all side pressure upon the link and liftit perpendicularly. These objects are attained by the mechanismillustrated in the accompanying drawings,formi-ng apart of thisspecification, in which- Figure 1 is a side elevation, Fig. 2 is a plan,and Fig. 3 is a detached view, of an attachment to be secured to theconcave side of the link when to be used on locomotives, indicated indotted lines in Fig. 1. Fig. 4 is a side elevation of the link and itsconnections mounted upon a base a part of which is broken away. Thisview shows the engine-shaft in section. Fig. 5 is an end view with someof the parts removed. Fig. 6 is a detached view of the rock-shaft andshows the manner in which it is connected with the link which in thisview is partly broken away.

The letter A indicates the link, which is of curved form, and isprovided with a longitudinal opening, A, which slides freely upon ablock, B, having secured to it on each side a guide-plate, B, whichmaintain the block B in its proper position within the slot or openingA, and between which the link slides up and down, thus forming guidesthereto. A wrist-pin, 0, passes through the plates B and block B, whichis attached to a crank, I, placed on one end of a rock-shaft, J,supported in suitable bearings, and preferably of arched form. At thetop of this arch is secured one end of a Valve-rod, K, the other end ofwhich is attached to the valve K. On the concave side of the link A arelugs or, having openings a, which arefor the purpose of attaching theeccentric-rods L L, which extend gether with its valve K.

from the link to two eccentrics, N, secured to the shaft M.

E is a triangular piece of metal attached to u the link A. WVashers fare placed on each side of the'triangular bracket-piece E, between saidpiece and the double lift-bars F.

The double lift-bars F have a boss, F, on

their upper ends, which gives a longer hearing to the bolt 0 than itwould otherwise have, and the lower ends of these lift-bars are slottedto receive the lower ends of bifurcated lever G, which is pivotedthereto by the bolts The lever Gis pivoted to the post H, .or othermeans of support, by the bolt h, which forms the fulcrum thereof. Thelever G is provided with a handle, G, by means of which the link A maybe moved in an upward or downward direction, and thereby reverse themovement of the valve-rod K, to- The forked or bifurcated portion .of.the lever G is found to give greater ease in handling the lever, toincrease its durability, and also to prevent lost motion.

E (shown in Fig. 3) is a metal bracket, and is intended to be attachedto the concave side of the link A when the link is applied tolocomotives, as the lever G is placed on the concave or back side of thelink when used on locomotives.

Having described my invention, what I desire to secure by Letters Patentand claim is The curved link A, having slot A and bracket E, the blockB, having guide-plates B and wrist-pin O, in combination with liftbarsF, pivoted thereto, and bifurcated lever G, as describechand for thepurposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL T. BRYANT.

IVitnesses:

HARDEY IVICCLANAHAN, W. D. SNIDER.

